US1718662A - Tire valve - Google Patents

Description

June 25, 1929. v E. G. QAKLEY T IRE VALVE Filed June 5. 1925 w WMM;

gva/Danica ERMEWUS Gr. OAKLEY, 101' SOUTHPURT, @ONNECTICUUL ASSItEi-NUR T0 Mltllwt'iwtlflit Riddell@ COMPANY, F BlltllDGIEIPORT, tlNNECWllIUT,

TIRE VALVE.

application tiled .lune 5, '1925. terial No. thaw.

lhis application relates to tire valves and more particularly to an improved tire valve stem or shell, designed to contain thevalve proper or valve inside which is mounted t ivithin the stem and adapted to control the admission oit air to and venting it from the tire.. i

Such valve stems generall consist of a tuloular loody portion, provi ed at one end' l@ vvith a relatively broad tlat disk-lilac head or hase, desi ned to he placed Within the i inner tuloe o the tire and having at the other end a reduced portion or neck Within vvhich the valve inside is secured and which receives the yusual valve cap. ln the past, such stems have usually been made from a piece ot solid har stock the air passage therethrough being tormed loy drilling a hole through the piece of stoclr and enlarging the passage at one end to torni a shoulder upon vvhich the valve spring shoe, usually employed in connection vvith a 'valve inside, may seat. lin such a construction, the exterior diameter of the valve stem must he ot a certain standard size to conform to the requirements ol tire manuilacturers, and as the drilled air passage through the stem is relatively small, the vvall oi the stem is comparatively thiclr and hence the stems are heavy and contain a much greater amount ot' material than is required to vvithstand the strains to which they are suhn iected itis the material usually used is hrass or some non-corrosive suhstance, it is relatively expensive and hence il the stem ivere made oi they proper size vlith a relatively thin vvall, a considerable saving would he elitected.

lin the manufacture ol such a thin vv-all stein, it is necessary to malte provision tor securing therevvithin the usual valve inside, and providing some means to support the valve spring shoe which is a part ot the standard valve inside in common use at the present time.

@ne object oil my invention, therefore, is the provision oit a valve stem provided vvith titl v a relatively thin ivall and having a housingy or cage secured at the upper end thereoi" to receive the valve inside.

A further ohject of my invention is the provision of a tire valve stem having a relatively thin vvall and a suhstantially uniform exterior diameter throughout its length, the upper end ol the stem heing dene signed. to receive a cage or housing i'or a valve inside, so that a tight connection may he made between these parts and the passage of air through the stem controlled hy the valve 'Within the cave. to

A still further ohject oit my invention is the provision of a valve cage or housing, designed to be connected to a tire valve stein adjacent the mouth thereoit, and so consti-noted as to provide a trap vvherein ior- @t eign particles may he caught and retained so that they are prevented trom interfering With the normal operation of the'valve.

lo these and other ends the invention consists in the novel tentures and comhinal@ tion oi parts to he hereinalter described and claimed.

.ln the accompanying drawings:

liig. 1 is a sectional vievv oit' a valve stein, embodying my improvements;

llifig. 2 is a composite vievv, shovving the various parts vvliich constitute the stem;

Fig. 3 is a sectional vicvv on line hte-3 Voit' hig. 2, and

liig,I Al is a' iragmentary sectional vievv, no similarI to liig. l, hut shovving a dillerent type oit valve inside.

'lhe valve stem vvhich il have selected to illustrate and deecrihe as a preu i'erred. embodiment oit my invention, comat prises a hollovv or tuhular loody portion ld,

a valve housing or cage ll, and a ring ld oi a sealing material, designed to he inserted at the joint hetvveen the cage and stem to etlectively prevent any lealrage oil air there nu betvveen. rllhe hody lll ot the valve stem is made oit the standard site as tar as enterior dimensions are concerned, hut the 'vvall ld is comparatively thin, thus providing a rel atively large hore lt through this portion nt ol" the stein. "lhis part oi the stem ma he made, :tor instance, hy heing dravvn trom sheet metal, as it vvill he iound that the vvall of a stem constructed in this manner mar he made sulliciently thieh to withstand the tot strains to which it may be subjected, and that with this or a similar method of construction, the cost of the stem' may be considerably reduced. Upon the lower end of the stem body is provided the usual dislrlike head or base 15, which joins the body by a reduced neclt portion 16. As shown in Fig. 3, opposite fiat sides 1'? and 18 are provided uponthis portion of the stem, which lattened sides extend substantially tothe upn per end of the body of the stem on the `exterior thereof. As these sides are formed by a flattening of the entire side of the wall of the stem, the shape of the cross section of the bore will correspond to that of the exterior, except that within the stem bore the lat sides terminate a short distance from the u per end of' the stem, as, for instance, at t e point 19 in Fig. 2. The bore of the stem above this point is circular in shape, thus causing the wall to be thinner op osite the flat sides than upon the rounded si es of the stem, as shown 1n Fig. 3..l This circular here is threaded, as shown at 2Q.,

The valve cage 11 comprises a cup shaped or hollow cylindrical body, having a closed lower end 21. The lower portion 22 ci this cage is of the proper size to freely enter the interior of the lood and leave a clearance space between the atsides thereof and the cage; @penings 23 are provided in the wall so that airis permitted to pass from the bore of the cage to that of the stern, and hence into the tire..

the cage body is somewhat enlarged and Above the lower portion 22 threaded exteriorly, as shown at 24, which threads are designed to engage the threads 20 of the shell. Above the threads 24 is a shoulder portion 25, designed to seat upon the u per edge of the shell body, and above this s oulder is a necls; threaded. externally as at 26, to receive the usual valve cap, and threaded internally, as shown at 27, to rsceive the threaded body 28 of the valve in side. This valve inside is preferably of the forni shown .in my coending application, Serial No, 706,689, tile April 15,1924, and need not be further described herein.

Toobviate vany possibility o the leakage of air at the joint between the threads 2d and 24, a ring 12 of a sealing material is placed between the lower face of the shoull der 25 and the up er edge of the bod 1() of the stem. A sha1 ow recess 29 may e provided in the shoulder 25 to receive this ring, and likewise the inner corner of the upper edge of the stem body may be slightlyr round= ed as at 30 to provide' 1n conjunction with the recess 29 a space to receive this ring.

The ring may be and preferably is made of solder. The parts are assembled by threadin the lower portion of the valve cage 11 t rough the ring 12, and then screwing the cage tightly into the stem body until the shoulder 25 seats closely upon the up per edge of the stem body, with the rin of solder compressed therebetween. The so der is then melted by any preferred method and results in perfecting the seal between the two parts so as to insure against the leakage of air. l

It will be apparent that an extremely serviceable and efficient valve stem results which is relatively economically made, due to the fact that the drawing or pressing operation used in its manufacture is inexpensive, and the amount of material used has been greatly reduced in comparison with that used. in the prior types of stems. The cage 11 may be drawn or pressed from a sheet or disc of metal, in somewhat the same manner that the stem body itself is made. The provision Vof the air openings or ports 23 at a position considerably above the lower closed end 21 of the cage, provides a catch basin or trap 31 at the lower end of the'cage which will. catch and retain foreign partie es entrained in the air passing into or out of the tire, so that such particles will not cling to 'the valve and interfere with the positive and eicient operation thereof,

In Fig. d ci' the drawings, I have shown my improved valve stem in connection with a different type of valve inside, which is largely used at the present time This valve inside is provided with a threaded body oor-- tion 32' corresponding to the part 28 in llig. 1, so that it may be secured within the stem in 'the same manner. The valve proper 33 is carried upon a stem 34:, which passes loose-- ly through a valve spring shoe 55 between which and the valve 33 reacts a s ring 3G which surrounds the stem. v It wil be seen that when this type of valve is used, the valve spring shoe rests upon the bottom 21 of the valve cage, so' that a firm support is had for this shoe to insure the v)roger action of the spring 3G to keep the va ve seated.

While '1 have shown and described a preferred embodiment of my invention, it will be understood that it is not to be limited to all of the details shown,l but is ca able of modification and variation within t e irit of the invention and within the scope o the appended claim.

What l claim is:

In a tire valve stem having a relatively thin walled hollow body portion of substantially uniform cross-section throughout its length and a valve cage. having an upper externally threaded portion adapted to receive a valve cap or the like, and an internal bore adapted to receive a valve insides, the combination of means for ermanentl securing the cage in the relative y thin wal ed hollow body ortion, said means comprising an external y threaded lower portion on said ca internal threads in the body of the va ve stem in which the lower threaded portion of the cage may be received, a shoulder on said ca e projecting laterally beyond the upperan lower threaded portions thereof, and opposing the upper edge of the body of the valve stem, said shoulder being provided with a groove, and a ring of solder disposed 4hand this 3 day of June? in said groove and melted after the cage is received in the stem to unite the cage permanently to the stem.

In witness whereof, I have `hereunto set my ERASTUS G. OAKLEY.

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